M11

This image of M11 was captured using my 80mm refractor at f/6.3, a Vixen Atlux mount and an Atik 383L mono CCD camera.

I captured 5 minute sub-frames with matching dark-frames and combined them with flat-field frames to reduce the effect of vignetting in the final image,

The total exposure times were 80 minutes using a H-alpha filter, 30 minutes using an OIII filter and 25 minutes using a SII filter.

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M11